探讨了利用双层辉光等离子渗金属技术(DGPSAT)溅射NiCrMoNb合金化层对TiAl金属间化合物静止空气中高温氧化抗力的影响.结果表明,不处理的TiAl由于TiO2为主的氧化层的剥落抗氧化性能较差,而TiAl-NiCrMoNb合金层由于形成了致密、晶粒细小的富Al2O3层而使TiAl抗氧化性能大大提高.合金层与基体之间存在互扩散,Ni,Cr,Mo,Nb的界面富集导致界面化学性质的很大改变.
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